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Update 08/19/2014: patch 1.67 did not modify the resource in question, so the 1.63 packages fit with the patch as well.
Update 01/16/2014: patch 1.66 does not modify the resource in question, so the 1.63 packages fit with the patch as well.
Update 10/19/2013: I updated pre-made packages for patch 1.63. The tool still works for the patch. As always with a patch that changes the resource, remember to update the custom package you've created to fit with the new patch version 1.63.
Update 09/04/2013: patch 1.57 does not modify the resource in question, so the 1.55 packages fit with the patch as well.
Update 08/12/2013: added "Complete Skill Achievement for $skill" to important memories package

Update 06/19/2013: I updated pre-made packages for patch 1.55. The tool still works for the patch. As always with a patch that changes the resource, remember to update the custom package you've created to fit with the new patch version 1.55.
Update 02/20/2013: Updated tool to version 1.0.6 for patch 1.50 (the old version crashed on saving the file). Also updated pre-made packages for patch 1.50. As always with a patch that changes the resource, remember to update the custom package you've created to fit with the new patch version 1.50.
Update 01/22/2013: Patch 1.48 does not modify the resource in question, so the 1.42 packages fit with the patch as well.
Update 01/09/2013: Patch 1.47 does not modify the resource in question, so the 1.42 packages fit with the patch as well.
Update 11/14/2012: Since EA has implemented turning off memories so that people have difficulties getting it to work, I updated the no memories version for 1.42 as well.
Update 10/30/2012: Updated only important memories package for patch 1.42. The tool still works without modification, but you MUST create a new package when you patch.
Update 09/27/2012: Patch 1.39 does not modify the resource in question, so the 1.38 packages fit with the patch as well.
Update 09/01/2012: Updated tool to version 1.0.5 for patch 1.38 (the old version crashed). Also updated pre-made packages for patch 1.38.
Update 07/09/2012: Patch 1.36 does not modify the resource in question, so the 1.31 packages fit with the patch as well.
Update 06/04/2012: Patch 1.34 does not modify the resource in question, so the 1.31 packages fit with the patch as well.
Update 03/16/2012: Patch 1.33 does not modify the resource in question, so the 1.31 packages fit with the patch as well.
Update 03/09/2012: Patch 1.32 does not modify the resource in question, so the 1.31 packages fit with the patch as well.
Update 03/02/2012: Updated both pre-made packages for patch 1.31. The latest version of the tool still works with this patch, so you can (and should!) use it to update your custom package for the patch.
Update 12/15/2011: Updated tool to version 1.0.4 for patch 1.29. (Fixes an issue with loading old packages.) Updated both pre-made packages for patch 1.29. FYI: The patch adds three new memories which you might want to get rid of:

Horse: Was led by Sim

Pet Memories: {1.SimName] became an adult

Pets (EP5): Saw a Pet Vomit

Update 11/03/2011: Fixed issue with the "Teach $pet hunting skill" memory. Thanks CatCreature for the report! This affects both pre-made packages and the program to create your own mod. Only this one memory was affected by the issue.
Update 10/23/2011: Updated the "Only important memories" package (redownload it; this time I haven't created a separate download to avoid confusion). I haven't been able to play through most of what's in the list so it's guess work and I might tweak it a bit.
Update 10/17/2011: The latest version of the tool appears to work fine with patch 1.26 (Pets). All packages will have to be updated however (or you'll have severe problems in your game and might corrupt it )! Here's what to do if:

you've used my "no automatic memories" package: Download the new one for 1.26 (velocitygrass_no_automatic_memories_1_26.zip) and replace the old one with that.

you've used your own package created with the tool: Start the tool and load your old package. Your old changes will be applied, but all new memories for Pets will remain checked by default after that, so uncheck those that you don't want and save your new package. Replace your old package with your new package.

you've used my "only important memories" package: I'll re-do the only important memories one when I have time to take a closer look at the memories. However you can follow the same steps as above for your own packages to update it yourself if you'd rather not wait.

Update 07/25/2011: Updated the ready-made flavors for patch 1.24. (The patch only brings a minor change related to the "Own a bar" lifetime wish.) The tool still works with the new patch. If you want to update your existing self-created memory mod make sure you have the latest version of the tool (see last update), start the tool, click load and select your old package, and then click save to save your updated package.
Update 07/03/2011: Updated with the following:

Updated Polish localization for GUI and categories (Thanks Wojtek!)

Added option to load existing package. Note for xml modders: Please be aware that this will only be read to uncheck memories. I.e. if you made other changes in the package (like changing memory icons or whether a memory is neutral or happy or bad) they will not be in the newly saved package! (If you only created memory mod packages with this tool and didn't modify them, this is not a concern for you and you can safely load a package, make changes, and save it again.)

Fixed switching of language so that unchecked boxes remain unchecked.

Removed obsolete non-localized version of the tool to avoid confusion.

Update 06/24/2011: Added Polish localization for GUI and categories (Thanks hotroxy777!)
Update 06/21/2011: Updated the game strings version (TS3_Memory_Modder_Game_Strings.zip) with the following:

Updated German localization with Categories (Thanks Crinrict!)

Added Spanish (ES and MX) and French localization for GUI and categories (Thanks Sims MX!)

The tool now reads directly from the installed GameplayData.package, so it should/could work with future patches. (This will hopefully also fix the issue with errors about the xml file being expected in a specific folder.)

Switched to new s3pi .dlls.

Update 06/20/2011: Localizable version is available for testing. This one uses game strings and allows you to select your language (if it's supported by the game).
Update 06/19/2011: fixed an issue with saving in the tool. Install path shouldn't matter now. (Thank you, severedsolo!)

A wedding is a pretty memorable thing. So is having a baby. But catching a great fish? Going shopping? Visiting the park - again?!

This mod stops the memory scrapbook from filling up with useless memories that then have to be manually deleted to make place for custom memories or to keep savefiles small. It can also be useful to prevent the memory popup from ruining screenshots of the important moments in your sim's life.

Usage: Copy the package (downloaded or self-created with the tool) into your mod folder. Only use one package at a time!

Make sure the version of the mod fits the patch level. Running The Sims 3 with an outdated version of this mod can cause errors with wishes (lifetime and normal) and GUI issues with the main tabs.

Note: This mod modifies DreamsAndPromisesNodes (TGI: 0x0333406C-0x00000000-0x9A976C90ECC75C81) and will conflict with all other mods that do so. This mods sets the IsLifeEvent tags of individual dream nodes to nothing, so that the game doesn't consider them memories any more.

Obviously, what is worth remembering is a highly subjective thing. Some people might want all social related memories, but none for the skills, others might want it the other way round. In order to accommodate this need, I created a little tool that allows you to uncheck the memories you don't want to be created automatically and save your own custom made memory mod package from the selection you made in the tool.

Here's a screenshot of the tool:

Requirements: The tool requires .NET Framework 3.5 to run (the latest should work as well). It works for Windows and might work on other platforms with Mono, however I can't provide assistance for that.

Instructions:
a) Unzip the tool
b) Start TS3_Memory_Modder.exe: The application it will attempt to read the Sims 3 installation directory from the registry and if it doesn't find it, it will prompt you for it.
c) Uncheck the memories you don't want (if you only want few memories, it will be helpful to first uncheck all and then check the ones you want). Don't worry about the checkboxes for the header items; they are ignored.
d) Click save and enter the path where you want to save your mod package (e.g. in your mod folder)
e) Wait for a message to pop up that confirms your file was saved (this should only take a few seconds)
f) Close the tool and test the package in game

Additional option: You can load an existing package file that will restore which memories were checked and unchecked from the package. Note for xml modders: Please be aware that this will only be read to uncheck memories. I.e. if you made other changes in the package (like changing memory icons or whether a memory is neutral or happy or bad) they will not be in the newly saved package! (If you only created memory mod packages with this tool and didn't modify them, this is not a concern for you and you can safely load a package, make changes, and save it again.)

For your information: If you'd like to provide different ready-made flavors of memory mods made with this tool, please do so. It was the reason for making it.

I've also attached two ready-made flavors:

1) No automatic memories. As the name suggests, no memories will be created automatically. If you want memories, you have to (and still can) create them manually.

2) Only important automatic memories. This package will allow automatic creation of a few selected important or memorable (and specifically rare) life events.

Note: $sim can mean human or pet or both, depending on context.
All LTWs
Become young adult/adult/elder/vampire
$sim dies, Lay $sim to rest in graveyard
Be in a fire (not triggered for firefighter jobs), Be robbed
Get pregnant (trigger when find out), Give birth, Adopt boy/girl, Become a grandparent, Have triplets/twins, Sibling is born, Had a litter/foal
Adopted pet/wildhorse/stray, Be adopted, Put $sim up for adoption, Bought a $sim
Cancel Wedding, Divorce, Exchange Rings, Get Married, Propose Marriage, Get Married during wedding party
Breakup with $sim
Have first kiss/woohoo ever
Move in together with $sim/Move houses
Teens: Go steady with $sim, Get a part time job, Go To Prom
Teen/Pet: Become BFF with $sim
Graduated From High School/With Honors/Valedictorian/Barely
$sim is taken by the social worker - memory
Master $skill, Complete Skill Achievement for $skill
Win martial arts tournament
Catch every type of fish
Learn all recipes
Join $career, Join branch x, Quit job, Retire, Reach top level of $career
Horse: Won an International Jumping/Racing/Cross-country Competition
Dog: Learned all the tricks
Pet: Gained/Lost a trait
Saved $sim from death
See a Unicorn
Born from the Soil (pull Plant Sim from Forbidden Fruit)
Unlock Video Game Developer or Sports Agent Career
Achieved Max (Social Group) Influence
Attacked by Kraken
Created First Plumbot, Reverse Engineered First Nanite, Became Sentient
Changed the Future, Became Immortalized as the $string

I do not plan on providing additional flavors myself. Please create them with the tool.

General note: Just because an event is set to allow triggering of a memory doesn't necessarily always do so. The specific dream node needs to be active in the game as well for the sim. E.g. "Sibling is born" did not cause a memory in my tests, even though it was activated. Some memories also have a tuning that makes them appear only once every few days. If you want to go into more detail with modding this, you'll need to manually edit the .xml file as with any other tuning mod.

Localized version:

The new version uses in-game strings for the memories and allows you to select from a list of game-supported languages.

The tool GUI itself and the categories are not automatically translated, but can be. In the package you'll find an unfinished example for a German translation file.

Usage:
To switch to a different language simply select it in the drop-down box at the top and wait for the GUI to rebuild.

Note: Untranslated values are displayed in English. This goes for the GUI as well as missing translations (e.g. the Mexican Spanish translations don't seem to exist for the memories).

For Translators: Copy the file Strings_ENG_US_0x000f16b00ba8342f.txt into the same folder and name the copy the same as the string in the drop-down for your language. Change the string after the equal symbol to your translated string. (As an example see the first few strings in the German localization file.) You can test your translation immediately by restarting the tool (or simply switching to another language and back to yours). If you attach your translation in a comment, I can add it to the tool.

Additional Credits:
Many thanks to Peter Jones for the S3PI library, parts of which are included in the tool. (As per the S3PI license, this tool is also GPL 3.0 and the source code is attached.)
Localization of GUI and categories:
Thanks to Sims MX for the Spanish (ES and MX) and French localization.
Thanks to Crinrict for the German localization.
Thanks to hotroxy777 and Wojtek for the Polish localization.

You must have the expansion or stuff packs listed below installed to use this custom content. Please see the post text for any exceptions.

You need to be a Registered Member to be able to download from MTS. Registration allows you to thank and leave comments for the creators, see your download history, participate in the discussions and much more!

Quick Guide:

1. Click the file listed on the Files tab to download the file to your computer.
2. Extract the zip, rar, or 7z file. Now you will have either a .package or a .sims3pack file.

For Package files:

1. Cut and paste the file into your Documents\Electronic Arts\The Sims 3\Mods\Packages folder. If you do not already have this folder, you should read the full guide to Package files first: Sims 3:Installing Package Fileswiki, so you can make sure your game is fully patched and you have the correct Resource.cfg file.
2. Run the game, and find your content where the creator said it would be (build mode, buy mode, Create-a-Sim, etc.).

For Sims3Pack files:

1. Cut and paste it into your Documents\Electronic Arts\The Sims 3\Downloads folder. If you do not have this folder yet, it is recommended that you open the game and then close it again so that this folder will be automatically created. Then you can place the .sims3pack into your Downloads folder.
2. Load the game's Launcher, and click on the Downloads tab. Find the item in the list and tick the box beside it. Then press the Install button below the list.
3. Wait for the installer to load, and it will install the content to the game. You will get a message letting you know when it's done.
4. Run the game, and find your content where the creator said it would be (build mode, buy mode, Create-a-Sim, etc.).

Extracting from RAR, ZIP, or 7z: You will need a special program for this. For Windows, we recommend 7-Zip and for Mac OSX, we recommend Keka. Both are free and safe to use.